Catholic Church & Catholic Church. National Conference of Catholic Bishops. Bishops' Committee on the Liturgy. (1971). General instruction on the Liturgy of the Hours: With an introduction and survey. National Conference of Catholic Bishops. Committee on the Liturgy.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Catholic Church و Catholic Church. National Conference of Catholic Bishops. Bishops' Committee on the Liturgy. General Instruction on the Liturgy of the Hours: With an Introduction and Survey. Washington, D.C.: National Conference of Catholic Bishops. Committee on the Liturgy, 1971.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Catholic Church و Catholic Church. National Conference of Catholic Bishops. Bishops' Committee on the Liturgy. General Instruction on the Liturgy of the Hours: With an Introduction and Survey. National Conference of Catholic Bishops. Committee on the Liturgy, 1971.